Brush.



PATENTED JUNE 11, 1907.

r MUMFORD.

BRUSH.

H mm) m JOSEPH F. MUMFORD,.OF PHILADELPHIA, PENNSYLVANIA.

BRUSH.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed June 30,1903. Serial No. 163,815.

To all whom it may concern:

Be it known that I, Josnrn F. MUMFORD, a citizen of the United States,residing in Philadelphia, county of Philadelphia, State of Pennsylvania,have invented certain new and useful Improvements in Brushes, of whichthe following is a full, clear, and exact specification.

My invention relates particularly to that class of brushes known as opencenter brushes, in which the bristles or other liber are secured withina suitable holder.

The object of my invention is to provide a brush of simple and eflicientconstruction having provision whereby the bristles and also the bushhandle may be effectually secured to the holder, as will be hereinaftermore fully described and particularly claimed.

Referring to the drawings, Figure 1 represents a blank, from which aflat brush binder vis formed. Fig. 2 is an inverted plan of one of thebrushes a portion of the bristles being left out so as to show a portionof the metallic rings and a portion of the handle. Fig. 3 is a plan viewof a prepared round brush binder. Fig. 4 is an interior sectional viewof the finished binder and brush knot, the handle being omitted in thisview, section being taken on the dotted line b, b, Fig. 2. Fig. 5 is asectional view of the finished brush, section being taken on the dottedline a, a, Fig. 2.

In carrying out my invention, I employ a blank of thin sheet metal,similar to the shape of that shown in Fig. 1, which shape is used formaking a flat brush with round ends; a slit 7 is cut longitudinallythrough a portion of the center thereof, as shown in Fig. 1, the slitterminating at equal distances from the outer circular ends of theblank; triangular tongues 4 are further struck from the tenninus oi theslit to the inner dotted line 9, Fig. 1. The blank thus slitted isfurther stamped on the dotted lines 9, 9, the outer portion 2, of Fig.1, being turned downwardly at an angle to the channel base 1, as inFigs. 4 and 5, the inner portion 3 being also turned downwardly at anangle to the interior of the channel base, as in Figs 4 and 5. It willbe seen that the tongues 4 cut in the circular ends of the portion 8will permit that part to be turned in very readily, as shown by theinterior view in Fig. 4. The plans Figs. 2 and 3 show the inner bottomview of the prepared binder; a series of tapering concentric flat rings5 of metallic alloy are secured to the inner side of the channel base 1,the said rings being conveniently separated. In Fig. 3, for convenienceof description, the tongues 4 are shown as not having been pressed down,as they are in Fig. 2.

In making a flat brush, the knot of bristles or brush'fiber 6 is firstclamped by a convenient means (not shown), so as to make the knotconform to the-shape and size of the channel formed by the binders 2 and3; the brush channel, which has been previously supplied with the flatrings of metal alloy, is then placed over the assembled and shaped brushknot. The inner binder 3 is not at this stage of the operation presseddown entirely to its place, but is left slightly open, so that the brushend may be the more freely inserted within the open channel, the knotbeing forced down into the said channel and around the tapering rings ofalloy 5, so that the said rings will project downwardly into the mass ofbrush stock 6 and to some degree wedge the brush stock assembledtherebetween. When the brush knot end has been properly placed withinthe channel, the inner binder flange 3 is pressed down and outwardlyagainst the ortion of the brush knot which is now con 'ned within thechannel, the outer binder 2 and the brush knot 6 being convenientlysupported against said pressure. When the binder 3 has reached an anglenearly parallel with the outer binder 2, the metal alloy rings 5 arecaused to melt and envelop that portion of the brush knot end,which isadjacent to said alloy, the alloy melting at a temperature that will notinjure the brush fiber or bristles; the melting being done by theapplication of heat to the outward side of the brush channel base (by aconvenient means not here shown). When the alloy rings have been meltedmore pressure s applied to the inner and outer binders 2 and 3, and thealloy and brush knot end, and the mass is compressed com actly andrigidly together.

T e hollow space or socket 8 which is formed by bending the inner binder3 downwardly as shown in the sectional views in Figs. 4 and -5, isutilized as a. convenient means to hold a brush handle 8 (see Figs. 2, 4and 5). The said handle, fitting neatly within the socket, is thenapplied thereto and when in place, as in sectional view in Fig. 5,further pressure is applied to the outer binder 2. so as to inwardlycompress the binders and brush knot with the securing alloy rings andcause the inner binder 3 to the more compactly embrace and secure thehandle 8 within the socket 8.

In making round or oval brushes with p open center, the method justdescribed is followed. The lan in Fig. 3, showing the position occupiedby the alloy ring 5 and the outer binder 2 or, as it may be'called, aferrule in the case of round or oval brushes. In the plan shown, theinner binder 3 will assume more entirely the shape orfo'rm of thetongues 4 because of the circular-form of the handle socket.

Having thus described my invention, what I claim as new and desire tosecure by'Letters Patent is,

1. A brush comprising a member provided with an endless channel and abrush knot secured between the side walls of the channel.

2, A brush com ris'inga memberprovided with a channel, a rush knotextending into" the channel, and means commingled with the bristles ofthe brush knot for securing the 1 brush knot within the-channel.

3. A brush'comprising a handle, a member provided with an endlesschannel surrounding the handle, and a brush knot secured between theside walls of the channel.

4. A brush comprising a handle, a member rovided with an endless channelsurrounding the handle, a brush knot extending into the channel, andmeans commingled with the bristles of the brush knot for securing thebrush knot within the channel. i

5. A brush comprising a single piece of sheet metal forming an endlesschannel and a brush knot secured between the sidewalls of the channel.

6. A brush comprising a single piece of sheet metal forming an endlesschannel, a

brush knot extending into said channel, and

meanscommingled with the bristles of the brush knot for securing thebrush knot within the channel.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing Witnesses.

J OSEPH F. MUMFORD.

Witnesses:

JOHN F. HOY, JOSEPH F. MAGEE.

